Comment 2 for bug 1737332

So for the snapd side of this bug:
1. snapd in edge (2.30+) supports setting core settings even if no core snap is installed.
2. proxy settings are only considered on core currently via /etc/environment and require a restart
3. We are writing /etc/environment on core devices but do no length checks (i.e. we do not check the 8MiB limit)

So (1) is taken care of but (2) and (3) still needs work.